Oct. 3: Learn ten new plants every month in this plant identification class led by Jill Morganelli, curator of the Kallam Perennial Garden. Held the first Saturday of every month from 8:30 to 10:30 a.m. Los Angeles County Arboretum & Botanic Garden, 301 North Baldwin Ave., Arcadia. $5 members/$7 non-members. Pre-registration: (626) 821-4623.

Oct. 4: See what some of L.A.’s most innovative architects are up to during the self-guided home tour, “A Day in Manhattan (Beach),”sponsored by the American Institute of Architects, Los Angeles. The tour will include homes by architect Grant Kirkpatrick of KAA Design, Michael Lee of Michael Lee Architects, James Meyer of LeanArch and Jess Mullen-Carey & William Beauter of Make Architecture. 11 a.m. to 4 p.m. The homes are within a one-mile radius of one another. Tickets are $65 for AIA members and $75 for nonmembers. (213) 639-0777.

Oct. 4: The annual MAK Center for Art & Architecture fundraiser tour will highlight seven residences by architects Rudolph Schindler, Gregory Ain, Raphael Soriano, Harwell Hamilton Harris and Craig Ellwood. The self-driven tour will run from 11 a.m. to 5 p.m. Tickets are $75; students with ID are $65. If you’d like to be bused around instead and have a box lunch, add $78.50 to the price. To make reservations, go to www.makcenter.org or call (323) 651-1510.